Aaker, D. (1999). Marketing research 6th ed.
Chicago-čujuhus (17. p.)Aaker, David. Marketing Research 6th Ed. New york, 1999.
MLA-čujuhus (9. p.)Aaker, David. Marketing Research 6th Ed. 1999.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.